EP 1288657 B1 20051130 - Method for determining the reducing agent concentration (NH3) in the exhaust gas stream of a combustion engine
Title (en)
Method for determining the reducing agent concentration (NH3) in the exhaust gas stream of a combustion engine
Title (de)
Verfahren zum Bestimmen der Reduktionsmittelkonzentration (NH3) im Abgasstrom eines Verbrennungsmotors
Title (fr)
Procédé de mesure de la concentration d'agent réducteur (NH3) dans le courant des gaz d'échappement d'un moteur à combustion
Publication
Application
Priority
DE 10142236 A 20010829
Abstract (en)
[origin: EP1288657A2] Process for determining the reductant (ammonia) concentration in the exhaust gas stream of an internal combustion (I. C.) engine comprises initially correcting the crude measured value obtained by a gas sensor using an offset value to produce an intermediate value; and changing the intermediate value to a corrected ammonia measured value using the NOx concentration of the exhaust gas. Preferred Features: The NOx and ammonia concentrations are tabulated in a two dimensional table.
IPC 1-7
IPC 8 full level
G01N 33/00 (2006.01)
CPC (source: EP US)
G01N 33/0054 (2013.01 - EP US); Y02A 50/20 (2017.12 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 1288657 A2 20030305; EP 1288657 A3 20040324; EP 1288657 B1 20051130; DE 10142236 A1 20030410; DE 50205091 D1 20060105; ES 2252354 T3 20060516; US 2003061861 A1 20030403; US 6571601 B2 20030603
DOCDB simple family (application)
EP 02012233 A 20020604; DE 10142236 A 20010829; DE 50205091 T 20020604; ES 02012233 T 20020604; US 23007702 A 20020829